Automobile mold, in a narrow sense, is the general term for stamping all stamping parts of the automobile body. That is, "car body stamping die". For example, the top cover flanging die, beam strengthening plate pressing die, etc. The most important component of the automobile mold is the overlay mold. This type of mold is mainly cold die. In a broad sense, "automobile mold" is a general term for the manufacture of all parts of the automobile. For example, stamping mold, injection mold, forging mold, casting wax mold, glass mold and so on.

one Compression die
The molding process of the compression die is characterized by adding the plastic raw materials directly into the open mold cavity, and then closing the mold. After the plastic is molten under the action of heat and pressure, the cavity is filled with a certain pressure. At this time, the molecular structure of the plastic produces a chemical cross-linking reaction and gradually hardens. The compression mold is mostly used in thermosetting plastics, and its molded plastic parts are mostly used in the shell of electrical switches and daily necessities.
2. Injection mold
The molding process of the injection mold is characterized by placing the plastic raw materials in the heating barrel of the injection machine, the plastic is heated and melted, pushed by the screw or plunger of the injection machine, the nozzle and the pouring system of the mold into the mold cavity, and the plastic is solidified in the mold cavity by pressure preservation and cooling.
Because the heating and pressurization device can play a role in stages, injection molding can not only form plastic parts with complex shapes, but also have high production efficiency and good quality. Therefore, injection molding occupies a large proportion in plastic molding, and injection molds account for more than half of plastic molding molds. The injection machine is mainly used for the molding of thermoplastics, and in recent years, it has also been gradually used for the molding of thermosetting plastics.
3. Extrusion die
Extrusion die can continuously produce plastics with the same section shape, such as plastic pipes, bars, sheets, etc. The heating and pressurizing device of the extruder is the same as that of the injection machine. The molten plastic will form continuous molded plastic parts through the head, and the production efficiency is particularly high.
In addition to the several types of plastic molds listed above, there are vacuum forming molds, compressed air molds, blow molding molds, low foaming plastic molds, etc.
4. Transfer mode
Transfer die, also known as pressure injection die or extrusion die, its molding process is characterized by adding plastic raw materials to the preheated feeding chamber, and then applying pressure to the plastic raw materials in the feeding chamber by the pressure column, plastic melting under high temperature and high pressure, and through the mold pouring system into the cavity, and then chemical cross-linking reaction and gradually curing molding. The transfer molding process is mostly used for thermosetting plastics, which can form plastic parts with more complex shapes.

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